JP3243836B2 - Speaker cable - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speaker cable for connecting an audio amplifier and a speaker.

[0002]

2. Description of the Related Art In recent years, a method called bi-wiring connection has been used as a method for connecting an amplifier and a speaker. In this bi-wiring connection system, the output from one amplifier is divided into two channels per channel and connected to the mid-to-high range terminal and low range terminal of the speaker, respectively. The back electromotive force from the low range woofer To prevent the sound from affecting the speakers for the mid-high range, and to obtain good sound quality.

According to such a bi-wiring connection system, two cables are required for one channel for the middle and high frequency ranges and one for the low frequency range, and a total of four cables are required for the left and right channels.

A speaker cable having a larger conductor cross-sectional area is suitable for reproduction in a low frequency range. In a bi-wiring connection system, a cable for a low frequency range has a relatively larger conductor cross-sectional area than a cable for a middle and high frequency range. Often large ones are used.

As a speaker cable, there is a four-core cable called a star quad structure. In such a structure, two insulated wire cores on diagonal lines are generally short-circuited and used as one core. Identification of 4 hearts,
This is performed by the color given to the insulator, and the diagonal insulated wire core is usually made the same color.

[0006]

In the bi-wiring connection method, it is necessary to use two speaker cables on one channel, and it is necessary to use two types of cables having different conductor cross-sectional areas for different sound ranges. Become.

In a four-core star quad cable, the identification is performed in two colors. Therefore, when the four-core star quad cable is used separately for the low-tone range and the middle-high range, it is necessary to confirm the polarity using a tester or the like.

The present invention has been made in view of the above-mentioned problems of the prior art, and provides a speaker cable of this kind which can be used without difficulty as a star quad type cable or a bi-wiring connection type cable and which is easy to use. There is a purpose.

[0009]

SUMMARY OF THE INVENTION A speaker cable provided by the present invention is a four-core cable having two insulated wires each having a relatively different conductor cross-sectional area. Insulators with the same conductor cross-section have the same color and have different conductor cross-sections, have different colors, and have different conductor cross-sections. One insulator with a large conductor cross-section and one insulator with a small conductor cross-section That the insulators are provided with identification means of colors different from those colors, the insulation cores having the same color are arranged next to each other, and the insulation cores having the identification means are arranged diagonally. Features.

[0010]

FIG. 1 shows an embodiment of a speaker cable according to the present invention.

The four insulated wires 2, 3, 4, and 5 assembled in the common sheath 1
, The outer diameter of the conductor is made uniform, but is composed of two insulated wires 2, 3 having a relatively large conductor cross-sectional area and insulated wires 4, 5 having a relatively small conductor cross-sectional area.

Two insulated wires 2, 3 having a large conductor cross section
Is that the insulator is colored with a specific color A, and the two insulated wires 4 and 5 having a small conductor cross-section are colored with a specific color B of the insulator, so that different conductors have different conductor cross-sections. And insulator.

One insulated wire core 2 having a large conductor cross-sectional area;
One insulated wire core 5 having a small conductor cross-sectional area is provided with a linear marking 8 by a color C different from those insulators as identification means. It is not limited to the marking, but may be any as long as the hue can be determined.

The conductors having the same conductor cross-sectional area, that is, the insulators have the same color, and the insulation wire cores 2, 3, 4, and 5 are adjacent to each other, and the marked insulation wire core 2 having a large conductor cross-section and the conductor cross-section are provided. Are arranged so that the insulated wire cores 5 with small markings are on diagonal lines. Of course, the insulated wire cores 3 and 4 having different conductor cross-sectional areas without marking are also arranged so as to be on a diagonal line.

When the speaker cable constructed as described above is used for bi-wiring, two insulated wires 2, 3 having a large conductor cross-sectional area are confirmed and selected for the low frequency range by the color A, and the marking 8 is also used. "+-] With or without
And connect it to the terminal for the low frequency range, and confirm and select the two insulated wires 4, 5 having a small conductor cross-sectional area for the middle and high frequency range based on the color B. It is sufficient to confirm the polarity of "+-" and connect to the terminal for the mid-high range, so that bi-wiring connection can be achieved easily and accurately without checking with a tester or the like.

On the other hand, when the speaker cable of this embodiment is used as a star quad type, one insulated wire core 2 and 4 each having a different conductor cross-sectional area with a mark, and one each having a different conductor cross-sectional area without a mark are used. Insulated wire cores 3 and 5 are divided into respective conductors and short-circuited to each other, and the polarity of "+-" can be confirmed with or without marking, and then connected to a predetermined terminal. There is no worry about incorrect connection.

[0017]

According to the speaker cable of the present invention as described above, when used as bi-wiring, low color can be obtained by confirming the color of the insulator and confirming the presence / absence of marking between insulators of the same color. It can be selected for the range and the middle and high range, and the polarity in each range can be confirmed,
Therefore, the scheduled bi-wiring connection can be easily and accurately performed without checking with a tester or the like.

Also, a star quad type in which the insulated wires having different conductor cross-sectional areas are divided into those with markings and those without markings, and the conductors are short-circuited to each other to check the polarity by the presence or absence of markings. Can also be used as a cable.

As described above, the speaker cable of the present invention can be used without difficulty for both bi-wiring and star-quad type cables, and the intended purpose of providing a user-friendly speaker cable of this kind is sufficient. Can be achieved.

[Brief description of the drawings]

FIG. 1 is a cross-sectional explanatory view showing one embodiment of a speaker cable according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sheath 2 Insulated wire with large conductor cross section (with marking) 3 Insulated wire with large conductor cross section 4 Insulated wire with small conductor cross section 5 Insulated wire with small conductor cross section (with marking) 6 Conductor 7 Insulation Body 8 marking

Claims (1)

(57) [Claims] 1. An insulated wire core having relatively different conductor cross-sectional areas
A four-core cable having a plurality of conductors, each having the same conductor cross-sectional area and the same color for the insulator of the insulated wire core and different conductor cross-sectional areas for different conductors, and having a large conductor cross-sectional area. An insulator of one insulated wire core and an insulator of one insulated wire core having a small conductor cross-sectional area are provided with identification means of different colors from those colors, and the insulated wire cores in which the insulators have the same color are adjacent to each other, A speaker cable, wherein insulated wires having identification means are arranged diagonally.